Updated Wi-Fi hotspot dialog to the Material Spec.

+ If there is scrolling then force the scrollbars to always appear.
+ Align contents of the dialog with the title.
+ Change "Network SSID" to "Network name".
+ Added wifi_* styles to other style xml files so that Wi-Fi hotspot dialogs are visible on tablets.
+ Move layout_width/height from res/layout/{wifi_dialog.xml, wifi_dialog_row.xml} from style into the xml file.

Bug: 17684359
Change-Id: I42fb69132d6ba0fb8d9853de6f5524f29e6b70b6

res/values/strings.xml

@@ -1554,7 +1554,7 @@
      <!-- Text displayed when WPS fails due to another session [CHAR LIMIT=150] -->
     <string name="wifi_wps_failed_overlap">Another WPS session was detected. Please try again in a few minutes.</string>
     <!-- Label for the SSID of the network -->
-    <string name="wifi_ssid">Network SSID</string>
+    <string name="wifi_ssid">Network name</string>
     <!-- Hint for a text field to enter the SSID of a hidden wifi network. [CHAR LIMIT=35] -->
     <string name="wifi_ssid_hint">Enter the SSID</string>
     <!-- Label for the security of the connection -->

res/values/styles.xml

@@ -220,8 +220,6 @@
     </style>
 
     <style name="wifi_item">
-        <item name="android:layout_width">match_parent</item>
-        <item name="android:layout_height">wrap_content</item>
         <item name="android:layout_marginTop">8dip</item>
         <item name="android:layout_marginStart">8dip</item>
         <item name="android:layout_marginEnd">8dip</item>
@@ -232,8 +230,6 @@
     </style>
 
     <style name="wifi_item_label">
-        <item name="android:layout_width">wrap_content</item>
-        <item name="android:layout_height">wrap_content</item>
         <item name="android:paddingStart">8dip</item>
         <item name="android:textSize">14sp</item>
         <item name="android:textAlignment">viewStart</item>
@@ -242,24 +238,18 @@
     </style>
 
     <style name="wifi_item_content">
-        <item name="android:layout_width">match_parent</item>
-        <item name="android:layout_height">wrap_content</item>
         <item name="android:textAlignment">viewStart</item>
         <item name="android:textAppearance">@android:style/TextAppearance.Material.Subhead</item>
         <item name="android:textColor">@*android:color/primary_text_default_material_light</item>
     </style>
 
     <style name="wifi_item_edit_content">
-        <item name="android:layout_width">match_parent</item>
-        <item name="android:layout_height">wrap_content</item>
         <item name="android:paddingStart">4dip</item>
         <item name="android:layout_marginStart">4dip</item>
         <item name="android:textSize">18sp</item>
     </style>
 
     <style name="wifi_section">
-        <item name="android:layout_width">match_parent</item>
-        <item name="android:layout_height">wrap_content</item>
         <item name="android:orientation">vertical</item>
     </style>